stmmac: reorganise class operations.

This patch reorganises the internal stmmac ops structure.
The stmmac_ops has been splitted into other three structures named:
 stmmac_ops
 stmmac_dma_ops
 stmmac_desc_ops

This makes the code more clear and also helps the next work to
make the driver more generic.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/stmmac/common.h

@@ -239,25 +239,11 @@ static inline void stmmac_get_mac_addr(unsigned long ioaddr,
 	return;
 }
 
-struct stmmac_ops {
-	/* MAC core initialization */
-	void (*core_init) (unsigned long ioaddr) ____cacheline_aligned;
-	/* DMA core initialization */
-	int (*dma_init) (unsigned long ioaddr, int pbl, u32 dma_tx, u32 dma_rx);
-	/* Dump MAC registers */
-	void (*dump_mac_regs) (unsigned long ioaddr);
-	/* Dump DMA registers */
-	void (*dump_dma_regs) (unsigned long ioaddr);
-	/* Set tx/rx threshold in the csr6 register
-	 * An invalid value enables the store-and-forward mode */
-	void (*dma_mode) (unsigned long ioaddr, int txmode, int rxmode);
-	/* To track extra statistic (if supported) */
-	void (*dma_diagnostic_fr) (void *data, struct stmmac_extra_stats *x,
-				   unsigned long ioaddr);
-	/* RX descriptor ring initialization */
+struct stmmac_desc_ops {
+	/* DMA RX descriptor ring initialization */
 	void (*init_rx_desc) (struct dma_desc *p, unsigned int ring_size,
-				int disable_rx_ic);
-	/* TX descriptor ring initialization */
+			      int disable_rx_ic);
+	/* DMA TX descriptor ring initialization */
 	void (*init_tx_desc) (struct dma_desc *p, unsigned int ring_size);
 
 	/* Invoked by the xmit function to prepare the tx descriptor */
@@ -281,7 +267,6 @@ struct stmmac_ops {
 	/* Get the buffer size from the descriptor */
 	int (*get_tx_len) (struct dma_desc *p);
 	/* Handle extra events on specific interrupts hw dependent */
-	void (*host_irq_status) (unsigned long ioaddr);
 	int (*get_rx_owner) (struct dma_desc *p);
 	void (*set_rx_owner) (struct dma_desc *p);
 	/* Get the receive frame size */
@@ -289,6 +274,28 @@ struct stmmac_ops {
 	/* Return the reception status looking at the RDES1 */
 	int (*rx_status) (void *data, struct stmmac_extra_stats *x,
 			  struct dma_desc *p);
+};
+
+struct stmmac_dma_ops {
+	/* DMA core initialization */
+	int (*init) (unsigned long ioaddr, int pbl, u32 dma_tx, u32 dma_rx);
+	/* Dump DMA registers */
+	void (*dump_regs) (unsigned long ioaddr);
+	/* Set tx/rx threshold in the csr6 register
+	 * An invalid value enables the store-and-forward mode */
+	void (*dma_mode) (unsigned long ioaddr, int txmode, int rxmode);
+	/* To track extra statistic (if supported) */
+	void (*dma_diagnostic_fr) (void *data, struct stmmac_extra_stats *x,
+				   unsigned long ioaddr);
+};
+
+struct stmmac_ops {
+	/* MAC core initialization */
+	void (*core_init) (unsigned long ioaddr) ____cacheline_aligned;
+	/* Dump MAC registers */
+	void (*dump_regs) (unsigned long ioaddr);
+	/* Handle extra events on specific interrupts hw dependent */
+	void (*host_irq_status) (unsigned long ioaddr);
 	/* Multicast filter setting */
 	void (*set_filter) (struct net_device *dev);
 	/* Flow control setting */
@@ -298,9 +305,9 @@ struct stmmac_ops {
 	void (*pmt) (unsigned long ioaddr, unsigned long mode);
 	/* Set/Get Unicast MAC addresses */
 	void (*set_umac_addr) (unsigned long ioaddr, unsigned char *addr,
-			     unsigned int reg_n);
+			       unsigned int reg_n);
 	void (*get_umac_addr) (unsigned long ioaddr, unsigned char *addr,
-			     unsigned int reg_n);
+			       unsigned int reg_n);
 };
 
 struct mac_link {
@@ -314,16 +321,13 @@ struct mii_regs {
 	unsigned int data;	/* MII Data */
 };
 
-struct hw_cap {
-	unsigned int version;	/* Core Version register (GMAC) */
-	unsigned int pmt;	/* Power-Down mode (GMAC) */
-	struct mac_link link;
-	struct mii_regs mii;
-};
-
 struct mac_device_info {
-	struct hw_cap hw;
-	struct stmmac_ops *ops;
+	struct stmmac_ops	*mac;
+	struct stmmac_desc_ops	*desc;
+	struct stmmac_dma_ops	*dma;
+	unsigned int pmt;	/* support Power-Down */
+	struct mii_regs mii;	/* MII register Addresses */
+	struct mac_link link;
 };
 
 struct mac_device_info *gmac_setup(unsigned long addr);

drivers/net/stmmac/gmac.c

@@ -630,19 +630,28 @@ static int gmac_get_rx_frame_len(struct dma_desc *p)
 	return p->des01.erx.frame_length;
 }
 
-struct stmmac_ops gmac_driver = {
+struct stmmac_ops gmac_ops = {
 	.core_init = gmac_core_init,
-	.dump_mac_regs = gmac_dump_regs,
-	.dma_init = gmac_dma_init,
-	.dump_dma_regs = gmac_dump_dma_regs,
+	.dump_regs = gmac_dump_regs,
+	.host_irq_status = gmac_irq_status,
+	.set_filter = gmac_set_filter,
+	.flow_ctrl = gmac_flow_ctrl,
+	.pmt = gmac_pmt,
+	.set_umac_addr = gmac_set_umac_addr,
+	.get_umac_addr = gmac_get_umac_addr,
+};
+
+struct stmmac_dma_ops gmac_dma_ops = {
+	.init = gmac_dma_init,
+	.dump_regs = gmac_dump_dma_regs,
 	.dma_mode = gmac_dma_operation_mode,
 	.dma_diagnostic_fr = gmac_dma_diagnostic_fr,
+};
+
+struct stmmac_desc_ops gmac_desc_ops = {
 	.tx_status = gmac_get_tx_frame_status,
 	.rx_status = gmac_get_rx_frame_status,
 	.get_tx_len = gmac_get_tx_len,
-	.set_filter = gmac_set_filter,
-	.flow_ctrl = gmac_flow_ctrl,
-	.pmt = gmac_pmt,
 	.init_rx_desc = gmac_init_rx_desc,
 	.init_tx_desc = gmac_init_tx_desc,
 	.get_tx_owner = gmac_get_tx_owner,
@@ -655,9 +664,6 @@ struct stmmac_ops gmac_driver = {
 	.set_tx_owner = gmac_set_tx_owner,
 	.set_rx_owner = gmac_set_rx_owner,
 	.get_rx_frame_len = gmac_get_rx_frame_len,
-	.host_irq_status = gmac_irq_status,
-	.set_umac_addr = gmac_set_umac_addr,
-	.get_umac_addr = gmac_get_umac_addr,
 };
 
 struct mac_device_info *gmac_setup(unsigned long ioaddr)
@@ -670,13 +676,16 @@ struct mac_device_info *gmac_setup(unsigned long ioaddr)
 
 	mac = kzalloc(sizeof(const struct mac_device_info), GFP_KERNEL);
 
-	mac->ops = &gmac_driver;
-	mac->hw.pmt = PMT_SUPPORTED;
-	mac->hw.link.port = GMAC_CONTROL_PS;
-	mac->hw.link.duplex = GMAC_CONTROL_DM;
-	mac->hw.link.speed = GMAC_CONTROL_FES;
-	mac->hw.mii.addr = GMAC_MII_ADDR;
-	mac->hw.mii.data = GMAC_MII_DATA;
+	mac->mac = &gmac_ops;
+	mac->desc = &gmac_desc_ops;
+	mac->dma = &gmac_dma_ops;
+
+	mac->pmt = PMT_SUPPORTED;
+	mac->link.port = GMAC_CONTROL_PS;
+	mac->link.duplex = GMAC_CONTROL_DM;
+	mac->link.speed = GMAC_CONTROL_FES;
+	mac->mii.addr = GMAC_MII_ADDR;
+	mac->mii.data = GMAC_MII_DATA;
 
 	return mac;
 }

drivers/net/stmmac/mac100.c

@@ -467,19 +467,28 @@ static int mac100_get_rx_frame_len(struct dma_desc *p)
 	return p->des01.rx.frame_length;
 }
 
-struct stmmac_ops mac100_driver = {
+struct stmmac_ops mac100_ops = {
 	.core_init = mac100_core_init,
-	.dump_mac_regs = mac100_dump_mac_regs,
-	.dma_init = mac100_dma_init,
-	.dump_dma_regs = mac100_dump_dma_regs,
+	.dump_regs = mac100_dump_mac_regs,
+	.host_irq_status = mac100_irq_status,
+	.set_filter = mac100_set_filter,
+	.flow_ctrl = mac100_flow_ctrl,
+	.pmt = mac100_pmt,
+	.set_umac_addr = mac100_set_umac_addr,
+	.get_umac_addr = mac100_get_umac_addr,
+};
+
+struct stmmac_dma_ops mac100_dma_ops = {
+	.init = mac100_dma_init,
+	.dump_regs = mac100_dump_dma_regs,
 	.dma_mode = mac100_dma_operation_mode,
 	.dma_diagnostic_fr = mac100_dma_diagnostic_fr,
+};
+
+struct stmmac_desc_ops mac100_desc_ops = {
 	.tx_status = mac100_get_tx_frame_status,
 	.rx_status = mac100_get_rx_frame_status,
 	.get_tx_len = mac100_get_tx_len,
-	.set_filter = mac100_set_filter,
-	.flow_ctrl = mac100_flow_ctrl,
-	.pmt = mac100_pmt,
 	.init_rx_desc = mac100_init_rx_desc,
 	.init_tx_desc = mac100_init_tx_desc,
 	.get_tx_owner = mac100_get_tx_owner,
@@ -492,9 +501,6 @@ struct stmmac_ops mac100_driver = {
 	.set_tx_owner = mac100_set_tx_owner,
 	.set_rx_owner = mac100_set_rx_owner,
 	.get_rx_frame_len = mac100_get_rx_frame_len,
-	.host_irq_status = mac100_irq_status,
-	.set_umac_addr = mac100_set_umac_addr,
-	.get_umac_addr = mac100_get_umac_addr,
 };
 
 struct mac_device_info *mac100_setup(unsigned long ioaddr)
@@ -505,13 +511,16 @@ struct mac_device_info *mac100_setup(unsigned long ioaddr)
 
 	pr_info("\tMAC 10/100\n");
 
-	mac->ops = &mac100_driver;
-	mac->hw.pmt = PMT_NOT_SUPPORTED;
-	mac->hw.link.port = MAC_CONTROL_PS;
-	mac->hw.link.duplex = MAC_CONTROL_F;
-	mac->hw.link.speed = 0;
-	mac->hw.mii.addr = MAC_MII_ADDR;
-	mac->hw.mii.data = MAC_MII_DATA;
+	mac->mac = &mac100_ops;
+	mac->desc = &mac100_desc_ops;
+	mac->dma = &mac100_dma_ops;
+
+	mac->pmt = PMT_NOT_SUPPORTED;
+	mac->link.port = MAC_CONTROL_PS;
+	mac->link.duplex = MAC_CONTROL_F;
+	mac->link.speed = 0;
+	mac->mii.addr = MAC_MII_ADDR;
+	mac->mii.data = MAC_MII_DATA;
 
 	return mac;
 }

drivers/net/stmmac/stmmac.h

@@ -58,7 +58,7 @@ struct stmmac_priv {
 	int rx_csum;
 	unsigned int dma_buf_sz;
 	struct device *device;
-	struct mac_device_info *mac_type;
+	struct mac_device_info *hw;
 
 	struct stmmac_extra_stats xstats;
 	struct napi_struct napi;

drivers/net/stmmac/stmmac_ethtool.c

@@ -268,8 +268,8 @@ stmmac_set_pauseparam(struct net_device *netdev,
 		}
 	} else {
 		unsigned long ioaddr = netdev->base_addr;
-		priv->mac_type->ops->flow_ctrl(ioaddr, phy->duplex,
-					       priv->flow_ctrl, priv->pause);
+		priv->hw->mac->flow_ctrl(ioaddr, phy->duplex,
+					 priv->flow_ctrl, priv->pause);
 	}
 	spin_unlock(&priv->lock);
 	return ret;
@@ -283,8 +283,8 @@ static void stmmac_get_ethtool_stats(struct net_device *dev,
 	int i;
 
 	/* Update HW stats if supported */
-	priv->mac_type->ops->dma_diagnostic_fr(&dev->stats, &priv->xstats,
-					       ioaddr);
+	priv->hw->dma->dma_diagnostic_fr(&dev->stats, (void *) &priv->xstats,
+					 ioaddr);
 
 	for (i = 0; i < STMMAC_STATS_LEN; i++) {
 		char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;

drivers/net/stmmac/stmmac_mdio.c

@@ -48,8 +48,8 @@ static int stmmac_mdio_read(struct mii_bus *bus, int phyaddr, int phyreg)
 	struct net_device *ndev = bus->priv;
 	struct stmmac_priv *priv = netdev_priv(ndev);
 	unsigned long ioaddr = ndev->base_addr;
-	unsigned int mii_address = priv->mac_type->hw.mii.addr;
-	unsigned int mii_data = priv->mac_type->hw.mii.data;
+	unsigned int mii_address = priv->hw->mii.addr;
+	unsigned int mii_data = priv->hw->mii.data;
 
 	int data;
 	u16 regValue = (((phyaddr << 11) & (0x0000F800)) |
@@ -80,8 +80,8 @@ static int stmmac_mdio_write(struct mii_bus *bus, int phyaddr, int phyreg,
 	struct net_device *ndev = bus->priv;
 	struct stmmac_priv *priv = netdev_priv(ndev);
 	unsigned long ioaddr = ndev->base_addr;
-	unsigned int mii_address = priv->mac_type->hw.mii.addr;
-	unsigned int mii_data = priv->mac_type->hw.mii.data;
+	unsigned int mii_address = priv->hw->mii.addr;
+	unsigned int mii_data = priv->hw->mii.data;
 
 	u16 value =
 	    (((phyaddr << 11) & (0x0000F800)) | ((phyreg << 6) & (0x000007C0)))
@@ -112,7 +112,7 @@ static int stmmac_mdio_reset(struct mii_bus *bus)
 	struct net_device *ndev = bus->priv;
 	struct stmmac_priv *priv = netdev_priv(ndev);
 	unsigned long ioaddr = ndev->base_addr;
-	unsigned int mii_address = priv->mac_type->hw.mii.addr;
+	unsigned int mii_address = priv->hw->mii.addr;
 
 	if (priv->phy_reset) {
 		pr_debug("stmmac_mdio_reset: calling phy_reset\n");